I started using it recently and it seems like it has improved my dps by quite a bit, just tried out lfr earlier today to test my dps on ultraxion and managed around 41500 without dark intent(i always seem to end up in lfr runs with zero locks), which surprised me as being much higher than i had expected.

So i'd definitely recommend using it, check out the vid in the other thread here on the priest forum, it's quite useful.